Version 4.1.0 — February 19, 2011 — 599 KB
* Added full IPv6 support using data from Maxmind (OS & ISP IPv6 support required)
* Added support for IPv4 mapped and compatible IPv6 addresses (IPv4 prefixed with "::ffff:" or "::")
* Added support for 6to4 and Teredo IPv6 tunneled IPv4 addresses
* Optimized IP database reading a little bit
* Added autocomplete for placeholders when typing into the template field in the new/edit action dialog
* Improved icon tooltip to look better and be easier to read/understand and better to localize effectively
* Added nationality of domain name to icon tooltip when applicable and differs from server location
* Added new icon for about: URLs (about:blank still has its own new page icon)
* Added new side menu for the add action button in the options dialog
* Added new clone selected action feature (via add menu or ctrl+c hotkey in options)
* Added new paste action(s) from clipboard feature (via add menu or ctrl+v hotkey in options)
* Added link to custom actions forum to add menu
* Added new {title} placeholder for page title
* Added new {meta-*} placeholders syntax to get page meta tags' data (ex: description, keywords)
* Added new {locale-*} placeholders expanded syntax for getting specific settings (page, content, UI, OS)
* Added new {TLD} placeholder to get the top level domain (public suffix; e.g. http://www.bbc.co.uk -> co.uk)
* Added a text link label for the preview icons button in the options dialog to make it more discoverable
* Added new default actions to the options: Internet Archive, SSL Checker, URL Parser, Wave a11y Check
* Added Page Metadata default action to the options (opens in popup dialog)
* Renamed old "Wikipedia" action to "Wikipedia: Country" and added domain and TLD Wikipedia lookups
* Replaced Copy Country action with Copy Server Info action: "domain (ip) - country (code)"
* Added proper support for "javascript:" actions; now executes in sandbox instead of opening URL
* Made pressing delete key on custom actions in options also select next item for quick multi-deletes/undos
* Replaced multi-pane help box in the edit action dialog with a single basics box and a popup for advanced
* Added buttons for each placeholder in the advanced help popup to paste to the template field
* Optimized options dialog action list generation to improve dialog load time with large action lists
* Improved importing to be smarter: can now take in first found plain text URL or link as starting point
* Improved drag & drop support to better strip bullet points when dropping action lists into options
* Improved cold startup time slightly by delaying string bundle loading until needed for menu or tooltip
* Fixed locale handling for some systems with mixed settings
* Fixed icon not updating on page refresh if needed and improved performance of update check a bit
* Fixed extra loading of country names list for edit action and icon set preview dialogs
* Fixed some minor potential issues with hotkey handling
* Removed old icon repositioning options now that Firefox 4 removed the status bar
* Updated existing experimental Mozilla Weave/Firefox Sync support to use newer pref name format
* Added extractionless XPI opt-out to install manifest for Gecko 2.0+ support
* Added support for using the larger logo image in the Flagfox details view in the new Addon Manager
* Removed old Flagfox 4.0 first run page (no more first run page for stable versions for now)
* Dropped all support for Gecko 1.9.0 based browsers, including Firefox 3.0.x and all Flock versions
* Removed all Gecko 1.9.0 support hacks
* Dropped a few locales due to lack of translators to do updates: ca, fi, lt, mk, ms
* This Flagfox version supports Firefox 3.5 - 4.0.* and SeaMonkey 2.0 - 2.1b3pre

Version 4.0.11 — November 7, 2010 — 574 KB
* IP address location database update for November 2010
* Some locale updates
* Fixed hotclick menu in edit action dialog to not truncate long localizations or resize menu to selection
* Switched Geotool over to new subdomain name created to resist a new massive wave of server crippling abuse
* Added cookie based system to identify Flagfox version to Geotool so we can restrict access to bogus clients
(no computer/personally identifying information; all users of the same Flagfox version use the same cookie)

Version 4.0.9 — September 16, 2010 — 563 KB
* IP address location database update for September 2010
* Updates to some locales
* Will now warn the way too many lingering Firefox 3.0.x users that their browser is EOL (once only)
* Improved readability in error reporting by back-converting paths to their actual resource:// URLs

Version 4.0.3 — March 10, 2010 — 526 KB
* IP address location database update for March 2010
* Improved placeholders for favicon loading in the options dialog
* Tweaked some styling to work better under some themes
* Replaced notification of disabled update checking with notification of stale database (more than 3 months old)
* Some tweaks to startup/shutdown/error handling
* Mapped backspace key to delete actions in the list in addition to the delete key (for keyboards without it)
* Worked around Mozilla bug 509800; dropping text into empty template field won't mix into the help text anymore
* Added Turkish (tr) locale (new to 4.0.x)
* Added drag & drop support for actions in options dialog (Gecko 1.9.1+ only; Flock & Firefox 3.0 not supported)
-> Drag actions within list to reorder them; drag to top/bottom of view to auto-scroll
-> Drag action in list to a text field to copy as text
-> Drag action template as text to list to open creation dialog for template
-> Drag link, bookmark, or address bar URL to list or creation dialog to use it as a starting point
-> Drag any text to creation dialog to use it as template starting point
-> Drag one or more action name/template pairs as text (w/ new line for each name/template) to list to add all

Version 4.0.1 — February 24, 2010 — 513 KB
* Disabled favicon preloading when 3rd-party cookies and cookie prompting is on; works around a Firefox crash
* Added shortcut to show all actions in the menu on ctrl+right-click to give quicker access to rarely used actions
* Added some more TLD notice exceptions (i.e. don't apply to servers with generic EU IPs but EU nation domains)
* Some minor localization tweaks in a few locales

Version 4.0.0 — February 21, 2010 — 513 KB
* IP address location database update for February 2010
* Major code refactoring and cleanup (including some fixes that may not be listed below)
* Added many new default actions (see flag's context menu and options dialog)
* Added ability to add as many custom actions as desired (will import old one from 3.3.x)
* Added a link in the edit custom action dialog to get/share actions via the forums
* Added full URL, base domain name, and locale placeholders to custom action syntax
* Added "copystring:" pseudo-protocol to custom action syntax
* Added ability to disable or reorder actions in the context menu
* Added ability to set actions to (single|double|triple)(left|middle/ctrl)click of icon
* Added ability to set actions to keyboard shortcuts (ctrl+alt+g is default for Geotool)
* Added favicons for actions in context menu and options (can disable in options)
* Added radio buttons to allow changing flag set preference directly from preview dialog
* Added a few tooltips in the options to better explain what some of them do
* Added detection of offline mode with a disconnected icon (instead of an error icon)
* Added an icon for data: URIs (instead of the puzzle piece)
* Fixed options dialog not refocusing when trying to open it again via context menu
* Fixed info bar checkboxes to act properly; may now be checked/unchecked before closing
* Added a second of guaranteed persistence to info bar to avoid accidental auto-hide
* Added a few more commonly resold TLDs to mismatch note exception list
* Changed TLD mismatch note info bar to only show once unless told otherwise
* Changed Geotool lookup to work from behind a proxy (using the IP Geotool connects to)
* Added experimental support for syncing actions via Mozilla Weave Sync 1.0 (preffed off by default)
* Added a localized first run page for users updating to 4.0 (not used for minor updates)
* Added Catalan (ca) and Ukrainian (uk-UA) locales
* Dropped a handful of locales due to lack of available translators: bg, bn-IN, fa, sr, tr
* Updated many locale codes to drop redundant dialect codes (ex: fr-FR) to match Mozilla codes
* Dropped support for Firefox 2 and added support for Firefox 3.7 prereleases